Quote:
Originally Posted by ta man
Try 87 octane,850 rpm idle,13.5 inches of vacuum,11.40's/119/120mph with a mild 3.08 gear,mild convertor,3900 lbs..driven 200 miles to the track roundtrip.Running the same valve springs and lifters since SD assembled the heads in Dec. 2008!Pretty easy to achieve....
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Your car runs good! I ran a similar combo as yours but with ported cast iron heads and less compression. It ran a best of
[email protected] mph. I had 3.42 gears but did use a 29" tall tire, however, I used a stock 2.48 gear set. The 455/3.08 gear setups have worked well over the years. Back in 1977 a board member here ran a 1968 Firebird in the first Muscle Car shootout. He ran mid 12's with 3.08 gears, 8:1 compression and gasket matched heads. He either won the event or was runner up.
